Chapter 26

Which of the following antihistamines would be best used to treat mild nausea and vomiting caused by motion sickness? (A) cetirizine (B) fexofenadine (C) loratadine (D) diphenhydramine (E) meclizine

Of the major serotonin (5-HT) receptors identified and used as targets for therapeutic agents, which one is the only one considered a ligand-gated ion channel? (A) \(5-\mathrm{HT}_{1 \mathrm{~B}}\) (B) \(5-\mathrm{HT}_{1 \mathrm{D}}^{\mathrm{1B}}\) (C) \(5-\mathrm{HT}_2^{11}\) (D) \(5-\mathrm{HT}_3^2\) (E) \(5-\mathrm{HT}^3\)

Which of the following drugs is the same as \(\mathrm{PGI}_2\) (prostacyclin) and is used for the treatment of pulmonary hypertension? (A) misoprostol (B) alprostadil (C) epoprostenol (D) treprostinil (E) travoprost

Latanoprost is an agonist at the \(\mathrm{PGF}_2\) receptors and is effective for the treatment of (A) cornea abrasions (B) ocular hypertension and open-angle glaucoma (C) ocular albinism (D) closed-angle glaucoma (E) allergic conjunctivitis